公开(公告)号：US3575388A

公开(公告)日：1971-04-20

申请号：US3575388D

申请日：1968-08-16

Applicant: GULF RESEARCH DEVELOPMENT CO

Inventor： SCARR JOHN JR

IPC: F02M7/08 ,  F02M17/04 ,  F02M7/06

CPC classification number: F02M7/08 ,  F02M17/04

Abstract: The invention comprises a carburetor having a controller in the fuel line feeding the main carburetor venturi to seal the fuel system against evaporative losses. The controller comprises two diaphragm operated valves arranged in cascade series. A throttleactuated pump is also provided to operate the diaphragms to open the valves simultaneously and quickly for fast acceleration.